The GetRealDocument and GetDocumentText operations return SOAP messages that contain base64 binary contents. By default, Sybase Search optimizes the transmission of SOAP messages by conforming to the Message Transmission Optimization Mechanism (MTOM) specifications. It creates a separate attachment for base64 encoded, binary data and references it from the main SOAP message.If you use a Web services middleware that does not support MTOM, returned SOAP messages produce error messages. You can disable MTOM in the configuration files, but doing so results in performance degradation during transmission of SOAP messages.